Twisting mechanism for warp twisting-in machines



March 26, 1929. J. H. BECKER 1,

TWISTiNG MECHANISM FOR WARP TWISTING-IN MACHINES Filed Jan. 17, 1928 INVENTOR; John H. BecKe r,

WITNESS A TTOR/VEY Patented Mar. 26, 1929.

*UNEITED" mares ,.P;A.TE"NT can.

JOHN HENRY BECKEB;OF RIGHMONDT I-IILL, -'NE-VI YORKQASSIGNORTTO WART TWEIST "ING IN' IVIAOTHINE"'(JOIVIZIIEANY, OF BROOKLYN, NEW'YORK, "A" CORPORATION OF -NETW YORK.

TWISTING" MECI-I'ANISMiFOR WARP..TWISTING -I1\T i MACHINES.

App1ication'fi1ed- January 17 1928. Seria1"No.-.247,336.

.I-nmachines for. joining two warp threads i. e., lie in such a vertical plane that they will byfa twist it is known to employ two coacting members one of which rotates in face to face contact with the other and to supportthe two threads sov that they project toward each other from supply beams and then, after extending around suitable guides, so that their ends proect in the same direction; whereby. when the rotary member rotates the two members will first coactito twistsaid endsarou-ndeach other and then to twist them as an already 4 twistedunit. around one of the threadsL -Each member usually consists of a supportand a pad, the latter a-fiording. its twisting face follows: A groove 11 isformdinthe inner face of support7 and receives. a plate-spring and being -yieldable. (See my Patent No.

1,424,27 6, for --example.)

The present invention consistsyina twistingmember of the class indicated in which the pad is yieldingly arranged on its support in a novel manner and so as to permit adjustment of the pressure to be exerted on the threads.

The invention further consists in an improved construction of a knife for cutting away the terminals of said ends of the two threads.

In the drawing,

Fig. 1 is a section on Fig. 2 is a plan;

Fig. 3 is an inside view of the pad support of the fixed member;

Fig. 4 is a section on line H, Fig. 3; and

Fig. 5 is a detail illustrating the knife.

AA are the threads projecting toward each other from supply beams 1 (diagrammatically shown) and extending around guides 22, BB being their ends projecting in the same direction to a clamp 3 and also received by a fork 3 The rotary twisting member comprises a support 4 and a twisting pad 5 having headed devices 5 by whichit is removably line 11, Fig. 2;

held in notches 4 in said support, which isthe segmental head of a suitably journaled shaft 6. The fixed twisting member comprises a support 7 and a twisting pad 8 hav ing headed devices 8 by which it is removably held in notches 7" in said support, said support 7 being a segmental head of an arm 9 rigidly secured to a fixed shaft 10 parallel with shaft 6. Support 7 may carry the fork 3 as shown. The guides 2 project through a hole in support 7 so that the threads engage them inwardly of the acting face of pad 8,

be, between the two pads when therrotary memberis inmotion, whereby thereupon said rotary member will first coact with the'fixed member to twist theendsfB B together (after theyshave been severed, as will appear) as itv rotatesagainst the other member with said endsintervening between themsuch endsswinging around guides 2%2,- and then twistthe thus twisted ends asanul lit around the body parts A A of said threads, thus completing thetwisting. and joining of the threads.

., Pad j8 is yieldingly-baoked orsupporte dwas 12, normally arched and sprojectinmifrom the groove (Fig. 4.) and being. thehead of astem 13 which extends through a hole in the supquently between such pad and the pad 5 according to the thickness and other qualities of the threads being twisted together. Usually there will be two of these adjustable cushions for the pad, one near each radial side of the support 7. It will be understood that the interlocks at 5 and 8 permit movement of the pad toward and from the support 7.

At the outset of the twisting a knife operates to sever the ends BB between 2 and 3. This knife includes a holder 17 oscillating in a-bracket 18 attached to support 7 and a blade 19 carried by the holder. The holder has a cross-groove 20 receiving the blade flat- Wise therein, which is removably held in place by a'headed stud in the form of a screw 21 extending through a key-hole slot 22 in the blade. In fitting the bladeto the holder the larger end of the slot is made to admit the screw-head, then the blade is slid along until the screw occupies the narrow part of the slot. and finally the screw is turned to clamp the blade between its head and the holder. Thus the blade may be securely held able toward and from the same, a cushioning spring for the pad spacing thesame from the support, and means to variably tension the v sprlng and thereby vary the spacing it tends to maintain between the padand support.

2. In a twisting mechanism of the class described, a twisting member comprising a supporting element, a twisting pad element carriedthereby and movable toward and from the same, a cushioning spring for the pad element spacing the same from the supporting element and having a stem penetrating one of them, and a screw tapped 1nto said stem and having a bearing on the'last-named element.

3. In a twisting mechanism of the class described, a twisting member comprising a sup porting element, a twisting pad element carried thereby and movable toward and from the same, a normally arched cushioning plate spring for the pad element spacing the same from the supporting element and having a a headed stud projecting therefrom, and a flat blade received flatwise in the groove and having a slot of varying widt-h receiving the stud at lts lesser width, the head ofthe stud being wider than such lesser width and narrower than the greater width of the slot and the blade being shittable'lengthwise of said slot to bring its greater width into registry with the head and thereby permit removal of the blade. v I

5. A knife for the purpose described-comprising a holder having a groove therein and a headed clamping screw tapped into the same, and a flat blade received fiatwise in the groove and having a slot of varying width receiving the stud. at its lesser width,'the head of the screw being wider than such lesser width and narrower than the greater width of the slot and the blade being shiftable lengthwise of said slot to bring its'greater width into registry with the head and there by permit removal of the blade.

In testimony whereof I aflix my signature.

JOHN H. BECKER. 

